clc; clear;

$x=20$;

if mod$(x,4)==0$

fprintf$(\text{'}4\text{'})$;

elseif mod$(x,5)==0$

fprintf$(\text{'}5\text{'})$;

elseif mod$(x,4)==0$&&mod$(x,5)==0$

fprintf$(\text{'}45\text{'})$;

end